body {
  min-width: 320px;
  max-width: 750px;
  background: #efefee;
  padding: 8px 10px;
}

.banner {
  text-align: center;
  margin-bottom: 3%;
}
img {
  width: 45%;
}
.middle {
  background: #fff;
  text-align: center;
  padding: 8px;
}
.middle div {
  float: left;
  width: 25%;
}

.middle div div {
  clear: both;
  width: 100%;
}

.clearfix:after {
  content: "";
  display: block;
  line-height: 0;
  visibility: hidden;
  height: 0;
  clear: both;
}

.middle1 {
  display: flex;
  background: #fff;
  padding: 8px;
}

.middle1 div {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
}
